On Fri, 31 Aug 2018 at 13:33 Xavier Fernandez <xav.fernan...@gmail.com> wrote:
> > > > Le ven. 31 août 2018 à 9:25 PM, Brett Cannon <br...@python.org> a écrit : > >> >> OK, so let's look at what we're trying to support. If we have pure Python >> code there's very likely going to be a bottom Python version that's >> supported and then forward-compatibility is assumed. This is specified >> today through python-requires, so having a specific Python version in the >> wheel itself isn't totally critical. So 'py3-none-any' combined with >> python-requires takes care of this the vast majority of the time. >> > > Hello, > > while python-requires is indeed nice, it is only usable by pip to select a > wheel file with a fully compliant PEP 503 repository. > Otherwise, like in a local wheelhouse (wheel files in a directory), it is > invisible to pip until pip tries to install the wheel so a more precise > python tag can still be somewhat useful... > (I agree that pip could access the wheel metadata to check the > python-requires without needing to unzip the whole file). > You can make your pure Python wheel have a py3-cp36m-* wheel name and you get the version specification you want; there is nothing saying a wheel must have extension modules if it specifies an ABI tag. But more importantly, pip still has to resolve what version of a package to use, so regardless of what's cached in your wheelhouse there will be a check against python-requires somewhere, else you're no worse off than just installing the wheel directly. IOW your wheelhouse isn't going to short-circuit pip's resolver, it's just going to save you from having to download some bits from somewhere else (unless I understand how pip utilizes the wheelhouse on disk).
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